non-Euclidean

non-Eu.clid.e.an

adj.Mathematics （形容词）【数学】
Of, relating to, or being any of several modern geometries that are not based on the postulates of Euclid.
非欧几里得的：属于、关于或是一种不是建立在欧几里得的基本原理基础之上的现代几何的